• A. calcium sulphate
• B. magnesium sulphate
• C. calcium nitrate
• D. calcium bicarbonate

Answer: Option D

Explanation:

• A. helps growth of bacterias
• B. impedes growth of algae
• C. increases dissolved oxygen content
• D. reduces turbidity.

Answer: Option C

Explanation:

• A. 0.5
• B. 1
• C. 1.5
• D. 2.5

Answer: Option B

Explanation:

• A. odour
• B. colour
• C. bacterias
• D. hardness

Answer: Option A

Explanation:

• A. maximum flow only
• B. minimum flow only
• C. average flow only
• D. maximum and minimum flow

Answer: Option C

Explanation:

• A. maximum at noon
• B. minimum at noon
• C. maximum at midnight
• D. same throughout the day

Answer: Option A

Explanation:

• A. resistor
• B. inductor
• C. capacitor
• D. current source

Answer: Option C

Explanation:

• A. 8
• B. 4
• C. 16
• D. 32

Answer: Option A

Explanation:

• A. atmospheric pressure
• B. surface tension
• C. force of adhesion
• D. force of cohesion

Answer: Option B

Explanation:

• A. the center of gravity of the body and the meta center
• B. the center of gravity of the body and the center of buoyancy
• C. the center of gravity of the body and the center of pressure
• D. center of buoyancy and metacenter.

Answer: Option A

Explanation:

• A. 9 times
• B. 1/9 times
• C. 1/3 times
• D. 3 times

Answer: Option B

Explanation:

• A. ferrite
• B. pearlite
• C. anstenite
• D. ferrite and cementite

Answer: Option A

Explanation:

• A. body centred cubic
• B. face centred cubic
• C. hexagonal close packed
• D. cubic structure

Answer: Option A

Explanation:

• A. 33 V
• B. 66 V
• C. 80 V
• D. 132 V

Answer: Option B

Explanation:

• A. gravitational pull exerted by the earth
• B. forces experienced by body in atmosphere
• C. force of attraction experienced by particles
• D. gravitational force of attraction towards the center of the earth.

Answer: Option D

Explanation: